Nozzle-tip for locomotives.



No. 717,986. PATENTBD JAN. 6, 1903. D. GRATTAN. NOZZLE TIP FOR LOCOMOTIVES.

APPLICATION FILED JUNE 18. 1902\ H0 MODEL A TTORNE Y9 jau' IIYIHI} Q Q Q .Q 2 2E WW1?! /w WIWW g m I V mugm! J g-1 M all I :1 l Q I'HII H I 1 7 WWW NTTED STATES PATENT OFFICE.

DAVID GRATTAN, OF ANACONDA, MONTANA.

NOZZLE-TIP FOR LOCOMOTIVES.

SPECIFICATION forming part of Letters Patent No. 717,986, dated January 6, 1963.

application filed June 18,1902. Serial No. 112,253. (No model.)

To aZl whom, it may concern:

Be it known that I, DA ID GRATTAN, a cit-izen of the United States,and a resident of An aconda, in the county of Deerlodge and State of Montana, have made certain new and useful Improvements in Nozzle Tips for Locomotives, of which the following is a specification.

My invention is an improvementin exhaust nozzles forlocomotives, and has for an object to provide a novel construction of nozzle-tip, to which end the invention consists in certain novel constructions and combinations of parts, as will be hereinafter described and claimed.

In the drawings, Figure 1 is a vertical crosssection of the nozzle-tip as in use. Fig. 2 is a detail perspective view of the nozzle-tip. Fig. 3 is a top plan view of the nozzle-tip, and Fig. 4 is an enlarged section thereof, and Fig. 5 is a detail section through one of the bridgestri-ps for supporting the inverted'cone.

The nozzle-tip is secured to the exhaustpipe or nozzle-stand A, preferably by fitting the tubular body B of the tip in the upper end of the stand and securing it by means of the screws 0, which enter a groove B, formed in the outer side of the body B, near the lower end thereof. This groove B extends entirely around the body 13 for convenience in securing the tip in position, and when entered by the screws 0 the latter will secure the tip in position as desired. The body B is provided externally at its upper end with a circumferential outwardly-projecting flange B which rests upon the upper end ofthe nozzle-stand A and aids in securing the desired joint between the parts A and B.

In its general construction my nozzle-tip tapers inwardly from the bottom and flares at the top. This is secured by means of the inwardly-tapering form of the bore or inner surface B of the body B, which converges toward the top of the tube B, as shown in Figs. 1 and 4, and by means of the inverted cone or spreader D, supported above the tube 13 and concentrically therewith, as shown in Figs. 1 and 4. It will be noticed the body B tapers inwardly toward its top, while the inverted cone flares outwardly on its sides, thus securing the desired taper of the tip from its bottom and the flaring construction at the top. The cone D is supported by means of l the bridge-strips E, which are tapered downwardly in cross-section and present at their lower sides approximately cutting edges in order to offer the least obstruction to the discharge from the nozzle. It will be noticed the apex of the inverted coneprojects slightly below the lower cutting edges of the bridgestrips, the sides of the cone and the inner ends of the bridge-strips merging, as will be understood from Figs. 2 and 4:. It will be noticed'that the bridge-strips lie partly above the top of the body 13 and that the inverted coneextends above the said body B, so that the outward tendency given the exhaust by the said cone is imparted thereto subsequent to the condensing tendency eifected by the inward taper of the bore of the body 13, so that the cone will operate upon the condensed exhaust in such manner as to fill the stack with exhaust-steam, as desired.

In practice the tip may be made in difierent sizes in order to fit the different nozzlestands in the various types of locomotives.

In operation the tapering plan of the shell or body B,with the aid of the V-shaped bridgestrips and the inverted cone arranged and operating as described, provides a greater area than is secured by the ordinary tip, and consequently the stack is filled at all points with exhaust-steam, thus removing the back pressure on the piston-head, greatly reducing the consumption of fuel, increasing the power of freight and switching locomotives, and increasing the speed of passenger-locomotives by permitting the steam to escape freely to the atmosphere the instant release takes place from the cylinder.

The device is simple and can be applied to .a locomotive at a small cost and without any to rest upon the nozzle-stand andin its outer side near its lower end with the circumferential groove to receive the screws for securing the tip in the nozzle-stand, the said screws, the bridge-strips extending across the upper end of the shell and tapering downwardly in cross-section, and the inverted cone supported by said bridge-strips concentrically with the said shell or body and extending above the shell or body substantially as and for the purposes set forth.

2. The nozzle-tip comprising the body or shell having its bore tapered inwardly toward its upper end, and the inverted cone supported above the body or shell and concentric therewith substantially as set forth.

3. A nozzle-tip comprising the body orshell having its bore tapered inwardly toward its upper end and provided in its outer side with a circumferential groove and at its upper end with an outwardly projecting flange, the bridge strips supported on and extending across the upper end of the body or shell, and the inverted cone supported by said bridgestrips above the body or shell and concentric therewith substantially as set forth.

4:. A nozzle-tip substantially as herein described comprising the body or shell, the bridge-strips, and the inverted cone supported by the bridge-strips above the upper end of the body or shell substantially as set forth.

5. A nozzle-tip for locomotives comprising the body or shell, the inverted cone concentric with said shell and the bridge-strips connecting the cone and shell and projecting above the upper edge of the shell, whereby to support the cone, and to aid in spreading the exhaust as it emerges from the shell substantially as set forth.

6. A nozzle-tip for locomotives comprising the body or shell tapering inwardly from the bottom and flaring outwardly at the top, the inverted cone, and the bridge-strips connecting the shell and cone and projecting above the upper edge of the shell and tapered in cross-section, all substantially as and for the purposes set forth.

DAVID GRATTAN.

Witnesses:

WILLIAM WOOD, JAMES S. DIoK. 

